:root {
  --bg: #f7f7fb;
  --paper: #ffffff;
  --paper-soft: rgba(255, 255, 255, 0.76);
  --text: #171724;
  --muted: #656579;
  --subtle: #87879a;
  --line: rgba(32, 32, 48, 0.11);
  --primary: #6554e8;
  --primary-dark: #4935c9;
  --primary-soft: rgba(101, 84, 232, 0.12);
  --green: #00a884;
  --green-soft: rgba(0, 168, 132, 0.12);
  --amber: #d97706;
  --amber-soft: rgba(217, 119, 6, 0.13);
  --danger: #df4f64;
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --shadow: 0 24px 70px rgba(52, 43, 110, 0.14);
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 3%, rgba(101, 84, 232, 0.15), transparent 25rem),
    radial-gradient(circle at 94% 18%, rgba(0, 168, 132, 0.12), transparent 24rem),
    var(--bg);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", "Apple SD Gothic Neo",
    "Malgun Gothic", Arial, sans-serif;
  line-height: 1.68;
  word-break: keep-all;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

svg,
img {
  display: block;
  max-width: 100%;
}

:focus-visible {
  outline: 3px solid rgba(0, 168, 132, 0.55);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 2000;
  padding: 10px 14px;
  border-radius: 12px;
  color: #fff;
  background: var(--primary-dark);
  transform: translateY(-140%);
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(calc(100% - 32px), var(--max));
  margin-inline: auto;
}

.section-pad {
  padding: 88px 0;
}

.site-header {
  position: fixed;
  inset: 12px 0 auto;
  z-index: 1000;
  padding-inline: 12px;
}

.nav-shell {
  width: min(100%, 1184px);
  min-height: 64px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 10px 9px 16px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.75);
  box-shadow: 0 16px 46px rgba(35, 28, 86, 0.11);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #fff;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.18), transparent 42%),
    linear-gradient(135deg, var(--primary), #8c7bff 58%, var(--green));
  box-shadow: 0 10px 24px rgba(101, 84, 232, 0.28);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-links,
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-links {
  gap: 24px;
  color: #464656;
  font-size: 0.95rem;
  font-weight: 760;
}

.nav-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-weight: 850;
  line-height: 1.2;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 14px 30px rgba(101, 84, 232, 0.27);
}

.button-ghost {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.7);
}

.button-large {
  min-height: 54px;
  padding-inline: 22px;
}

.menu-toggle {
  width: 46px;
  height: 46px;
  display: none;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  display: block;
  border-radius: 999px;
  background: var(--text);
}

.hero {
  min-height: 100svh;
  padding-top: 142px;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(280px, 0.98fr);
  align-items: center;
  gap: 58px;
}

.eyebrow {
  width: fit-content;
  margin: 0 0 20px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 13px;
  border: 1px solid rgba(101, 84, 232, 0.17);
  border-radius: 999px;
  color: var(--primary-dark);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
  font-weight: 820;
}

.eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 0 5px var(--green-soft);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 24px;
  font-size: clamp(2.55rem, 8vw, 5.6rem);
  line-height: 1.06;
  letter-spacing: 0;
}

.gradient-text {
  color: transparent;
  background: linear-gradient(112deg, var(--primary), #8a43c5 52%, var(--green));
  -webkit-background-clip: text;
  background-clip: text;
}

.lead {
  max-width: 650px;
  color: var(--muted);
  font-size: clamp(1.04rem, 2vw, 1.2rem);
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.signal-list {
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  color: #51515f;
  font-size: 0.94rem;
  font-weight: 760;
}

.signal-list li {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
}

.mockup-wrap {
  position: relative;
  min-width: 0;
}

.mockup-wrap::before {
  content: "";
  position: absolute;
  inset: 8% 7%;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(101, 84, 232, 0.26), transparent 67%);
  filter: blur(16px);
}

.mockup-card {
  position: relative;
  z-index: 2;
  width: min(100%, 430px);
  margin-inline: auto;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 34px;
  background:
    radial-gradient(circle at 94% 0%, rgba(101, 84, 232, 0.16), transparent 210px),
    #fbfbff;
  box-shadow: var(--shadow);
}

.mockup-top,
.upload-panel,
.score-panel,
.panel-head,
.risk-card {
  display: flex;
  align-items: center;
}

.mockup-top {
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.mini-label,
.status-chip,
.feature-tag,
.tag-dev {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 900;
}

.mini-label {
  color: var(--primary-dark);
}

.mockup-top strong {
  display: block;
  margin-top: 4px;
  font-size: 1.22rem;
}

.status-chip {
  padding: 7px 10px;
  color: var(--green);
  background: var(--green-soft);
}

.upload-panel {
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}

.file-icon {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  font-size: 0.76rem;
  font-weight: 900;
}

.upload-panel p,
.risk-card p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.score-panel {
  gap: 12px;
  margin-top: 14px;
}

.score-panel > div {
  flex: 1;
  padding: 15px;
  border-radius: 18px;
  background: var(--primary-soft);
}

.score-panel span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.score-panel strong {
  display: block;
  margin-top: 4px;
  font-size: 1.15rem;
}

.check-panel {
  margin-top: 14px;
  padding: 17px;
  border-radius: 22px;
  color: #fff;
  background: linear-gradient(145deg, var(--primary), #4131b0);
}

.panel-head {
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel-head span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.78rem;
  font-weight: 800;
}

.check-panel ul {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  list-style: none;
  font-size: 0.93rem;
}

.check-panel li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
}

.check-panel li span {
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.22);
}

.risk-card {
  gap: 12px;
  margin-top: 14px;
  padding: 15px;
  border: 1px solid rgba(223, 79, 100, 0.22);
  border-radius: 18px;
  background: rgba(223, 79, 100, 0.08);
}

.risk-dot {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--danger);
  box-shadow: 0 0 0 6px rgba(223, 79, 100, 0.12);
}

.mockup-button {
  min-height: 48px;
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  color: #fff;
  background: var(--text);
  font-weight: 900;
}

.floating-note {
  position: absolute;
  z-index: 3;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 18px 44px rgba(52, 43, 110, 0.13);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.floating-note strong,
.floating-note span {
  display: block;
}

.floating-note span {
  color: var(--muted);
  font-size: 0.82rem;
}

.note-a {
  top: 9%;
  left: -2%;
}

.note-b {
  right: -1%;
  bottom: 12%;
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.42fr 1fr;
  gap: 34px;
  align-items: start;
}

.intro-grid h2,
.section-head h2,
.principle-panel h2,
.cta-panel h2,
.trust-grid h2,
.faq-intro h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4.3vw, 3.7rem);
  line-height: 1.15;
  letter-spacing: 0;
}

.intro-grid p,
.section-head p,
.principle-panel p,
.cta-panel p,
.faq-intro p {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(1rem, 1.7vw, 1.13rem);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
  color: var(--primary-dark);
  font-size: 0.83rem;
  font-weight: 920;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-kicker::before {
  content: "";
  width: 24px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.soft-band {
  background: rgba(255, 255, 255, 0.44);
  border-block: 1px solid var(--line);
}

.section-head {
  max-width: 820px;
}

.problem-grid,
.steps-grid,
.feature-grid {
  margin-top: 46px;
  display: grid;
  gap: 18px;
}

.problem-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.plain-card,
.feature-card,
.feature-large {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
  box-shadow: 0 16px 44px rgba(52, 43, 110, 0.07);
}

.plain-card {
  padding: 26px;
}

.icon-tile {
  width: 50px;
  height: 50px;
  margin-bottom: 20px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  font-weight: 950;
}

.purple {
  color: var(--primary-dark);
  background: var(--primary-soft);
}

.green {
  color: var(--green);
  background: var(--green-soft);
}

.amber {
  color: var(--amber);
  background: var(--amber-soft);
}

.plain-card h3,
.feature-card h3,
.feature-large h3,
.step-card h3 {
  margin-bottom: 10px;
  font-size: 1.32rem;
  line-height: 1.28;
}

.plain-card p,
.feature-card p,
.feature-large p,
.step-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.dark-band {
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 88% 8%, rgba(101, 84, 232, 0.35), transparent 24rem),
    #171724;
}

.dark-band .section-kicker {
  color: #b7afff;
}

.dark-band .section-head p {
  color: #b8b8c8;
}

.steps-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.step-card {
  min-height: 250px;
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.065);
}

.step-card > span {
  display: inline-flex;
  margin-bottom: 44px;
  color: #b7afff;
  font-size: 0.78rem;
  font-weight: 920;
}

.step-card p {
  color: #b8b8c8;
}

.tag-dev {
  padding: 7px 10px;
  color: #fff !important;
  background: rgba(0, 168, 132, 0.18);
}

.feature-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-large {
  grid-row: span 2;
  padding: 30px;
  color: #fff;
  background:
    radial-gradient(circle at 82% 12%, rgba(255, 255, 255, 0.2), transparent 13rem),
    linear-gradient(145deg, var(--primary), #392aa7);
}

.feature-card {
  padding: 26px;
  background: #fff;
}

.feature-card.muted {
  background: rgba(255, 255, 255, 0.58);
}

.feature-tag {
  margin-bottom: 16px;
  padding: 7px 10px;
  color: var(--primary-dark);
  background: var(--primary-soft);
}

.feature-large .feature-tag {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
}

.feature-large p {
  color: rgba(255, 255, 255, 0.76);
}

.mini-flow {
  margin-top: 42px;
  display: grid;
  gap: 12px;
}

.mini-flow span {
  padding: 15px 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.09);
  font-weight: 850;
}

.principle-band {
  padding-top: 36px;
}

.principle-panel,
.cta-panel {
  padding: clamp(28px, 6vw, 64px);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 96% 0%, rgba(0, 168, 132, 0.16), transparent 18rem),
    rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
}

.trust-band {
  padding: 28px 0;
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.54);
}

.trust-grid {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  align-items: center;
  gap: 24px;
}

.trust-grid h2 {
  margin: 0;
  font-size: clamp(1.3rem, 2.6vw, 2rem);
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.trust-list span {
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #4d4d5f;
  font-weight: 800;
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 42px;
  align-items: start;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  overflow: hidden;
}

.faq-item h3 {
  margin: 0;
}

.faq-item button {
  width: 100%;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border: 0;
  background: transparent;
  color: var(--text);
  font-weight: 880;
  text-align: left;
}

.faq-item button span {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 999px;
  color: var(--primary-dark);
  background: var(--primary-soft);
}

.faq-answer {
  display: none;
  padding: 0 18px 18px;
  color: var(--muted);
}

.faq-item.is-open .faq-answer {
  display: block;
}

.faq-item.is-open button span {
  transform: rotate(45deg);
}

.final-cta {
  padding-top: 24px;
}

.cta-panel {
  text-align: center;
}

.cta-panel p {
  margin-inline: auto;
}

.cta-panel .button {
  margin-top: 18px;
}

.footer {
  padding: 44px 0 28px;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.62);
}

.footer-grid,
.footer-bottom {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.footer-grid p {
  max-width: 420px;
  margin: 12px 0 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px 22px;
  font-weight: 800;
}

.footer-bottom {
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--subtle);
  font-size: 0.92rem;
}

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1040px) {
  .nav-menu {
    gap: 12px;
  }

  .nav-links {
    gap: 14px;
  }

  .hero-grid,
  .intro-grid,
  .faq-layout,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .mockup-card {
    margin-top: 8px;
  }

  .steps-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-list {
    justify-content: flex-start;
  }
}

@media (max-width: 860px) {
  .site-header {
    inset: 8px 0 auto;
  }

  .nav-shell {
    align-items: center;
  }

  .menu-toggle {
    display: grid;
  }

  .nav-menu {
    position: absolute;
    inset: calc(100% + 8px) 12px auto;
    display: none;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow);
  }

  .nav-shell.is-open .nav-menu {
    display: block;
  }

  .nav-links,
  .nav-actions {
    display: grid;
    gap: 8px;
  }

  .nav-links a,
  .nav-actions a {
    width: 100%;
    justify-content: flex-start;
  }

  .nav-actions {
    margin-top: 10px;
  }

  .nav-actions .button {
    justify-content: center;
  }

  .hero {
    padding-top: 118px;
  }

  .problem-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-large {
    grid-row: auto;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 24px), var(--max));
  }

  .section-pad {
    padding: 68px 0;
  }

  .hero {
    min-height: auto;
    padding-bottom: 54px;
  }

  h1 {
    font-size: clamp(2.35rem, 12vw, 3.5rem);
  }

  .button {
    width: 100%;
  }

  .signal-list {
    display: grid;
    grid-template-columns: 1fr;
  }

  .mockup-card {
    padding: 16px;
    border-radius: 26px;
  }

  .score-panel {
    display: grid;
    grid-template-columns: 1fr;
  }

  .floating-note {
    position: static;
    margin: 12px auto 0;
    width: min(100%, 430px);
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .step-card {
    min-height: auto;
  }

  .step-card > span {
    margin-bottom: 28px;
  }

  .plain-card,
  .feature-card,
  .feature-large {
    padding: 22px;
  }

  .footer-grid,
  .footer-bottom {
    display: grid;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 360px) {
  .container {
    width: min(calc(100% - 20px), var(--max));
  }

  .site-header {
    padding-inline: 8px;
  }

  .brand {
    font-size: 0.95rem;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .mockup-card {
    padding: 14px;
  }

  .upload-panel,
  .risk-card {
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}